Gas Gauge

I've heard of alot of older Chevys having this problem. My gas gauge is constalty changing. I noticed when I come to a stop, is when it seems to happen the most. It will shoot down to empty and then up to full. Does anybody know what this problem is?

My 93 does it, especially on less that a 1/2 tank. Bad sender. It doesn't do it enough to bother me. I just keep the tank filled. I figure eventually the pump will crap out and then I can fix both problems at the same time.

My 1990 Chevy z71 was doing this and ended up being the sending unit, I finally got tired of it and bought a new sending unit on Ebay for under 50 dollars including shipping and that took care of the problem and its been in for a couple of years. BG1

I've heard of alot of older Chevys having this problem. My gas gauge is constalty changing. I noticed when I come to a stop, is when it seems to happen the most. It will shoot down to empty and then up to full. Does anybody know what this problem is?

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Finally, someone who has the same problem I do. Both of my GMC's had the same problem. I believe, after all my research, that the float on the fuel pump gets stuck. Both of my trucks started doing this after I installed aftermarket exhausts. Maybe it's related to that.